# EMF equation of transformers

EMF equation of transformers lets you calculate the RMS values of induced voltages in the primary and secondary windings of a transformer. An alternating voltage, when applied to the primary…

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# Parts of a motor

An electric motor converts electrical energy to mechanical energy. In general, an electric motor consists of a stator, a rotor, winding, bearings, and casing. The motor rotates due to the…

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# Star-delta starter (Wye-Delta Starters) – Circuit, working

Induction motors are robust and reliable and are used in all industries across the globe. Various methods are followed to start induction motors, out of which star-delta starters are the…

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# Comparison of core type and shell type transformers

A magnetic core and windings are two basic parts of a transformer. The windings are wound over the core and the core encircles the windings. Based on the way the…

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# Selection and sizing of transformers – made easy

A transformer is the device that makes power systems flexible, scalable and help save cost by reducing power loss. Here you can learn the selection and sizing of transformers and…

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# What is an autotransformer and how does it work?

An autotransformer, also known as variac or dimmerstat, is a single winding transformer which has a common primary and secondary winding. The primary and secondary winding in them is not…

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# Parts of a transformer

Transformer facilitates the delivery of power electric energy at minimum power loss. The basic parts of a transformer are core, the primary winding and secondary winding. Apart from these, there…

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# K-factor rated transformers

K-factor rated transformers are capable of withstanding the heating effects caused by harmonic load currents. They are specially designed for non-linear harmonics generating loads. K-factor transformers are also known as…

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# What is magnetization current in a transformer?

A certain amount of current is drawn by a transformer from the source connected to it primary even when no load is connected to its secondary. A part of this…

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# Magnetization inrush current in a transformer

Transformer inrush current or magnetization inrush current is a transient input current drawn by a transformer during its energization. Depending on several factors, the magnitude of the magnetization inrush current…

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